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Publication numberUS4911203 A
Publication typeGrant
Application numberUS 07/399,371
Publication dateMar 27, 1990
Filing dateAug 24, 1989
Priority dateApr 26, 1988
Fee statusPaid
Publication number07399371, 399371, US 4911203 A, US 4911203A, US-A-4911203, US4911203 A, US4911203A
InventorsJohn F. Garms
Original AssigneeBrunswick Corporation
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Fuel line connector
US 4911203 A
Abstract
A coupling assembly for connecting conduits conveying fuel under pressure, utilizes a pair of seals so as to define a chamber for the containment of excess pressurized fuel during the disengagement of the coupling members. A protective shield or flange is provided around the locking mechanism so as to prevent inadvertent contact with the release mechanism and accidential disengagement of the coupling members.
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Claims(3)
I claim:
1. A coupling for connecting conduits conveying fuel under pressure comprising:
first and second coupling members having means for connection to associated fluid conduits and means for connection to each other,
said first coupling member including a first body having therein a fluid flow passage and first valve means movable between a first position in which fluid flow through said passage is prevented and a second position in which flow is permitted and biasing means in said first body urging said first valve means into said first position,
said second coupling member including a second body having therein a fluid passage, annular first inner seal means housed in said second body and extending radially inwardly into said second body fluid passage and second valve means engageable with said first seal means to prevent fluid flow with biasing means in said second body urging said second valve means into engagement with said first seal means and an annular second inner seal means housed in said second body and extending radially inwardly into said second body fluid passage and spaced downstream from said first inner seal means,
said first body including a projection having a cross-section less than that of said second body fluid passage and extending from said first body and engageable with said first and second seal means when said coupling members are connected so as to provide a double seal along said projection and define a chamber radially outwardly of said projection between said first and second seal means,
said projection having a passageway connecting said fluid flow passages of said coupling members when said members are joined to allow fluid flow between said coupling members,
the engagement of said projection with said second valve means causing said second valve means to move out of engagement with said first seal means,
said first body projection remaining in engagement with said annular second seal means upon initial disengagement of said coupling members as said second valve means engages said first seal means so as to confine pressurized fluid to said chamber and said fluid passage in said first body extension to prevent the discharge of excess pressurized fluid.
2. The coupling defined in claim 1 further comprising locking means to releasably maintain said coupling members in engagement and release means disposed on one of said coupling members to disengage said locking means,
said coupling member having a pair of spaced extending flanges defining a channel in which said release means is disposed so as to prevent incidental contact with said release means and inadvertent disengagement of said locking means.
3. The coupling defined in claim 1 wherein said first and second inner seal means comprise an integral annular gasket press fit within said second body.
Description

This is a continuation of co-pending application Ser. No. 07/186,185 filed Apr. 26, 1988, now abandoned.

BACKGROUND OF THE INVENTION

The present invention relates to a quick connect and disconnect coupling assembly and more particularly to a coupling for connecting the line from a fuel tank to the line conveying fuel to an internal combustion engine.

Quick disconnect fuel line assemblies are well known in the marine art as is shown in U.S. Pat. No. 4,327,770.

Fuel line disconnect systems such as that shown in the '770 patent, utilize a pair of coupling members, each of which contains a spring biased valve member that seats itself upon a seal when the members are disconnected so as to prevent fuel leakage. However, since the fuel is typically pressurized, it is not uncommon for the disengagement of the coupling members to result in a spray of fuel caused by the momentary escape of fuel prior to the seating of the valve.

It is a purpose of the present invention to provide a quick disconnect fuel line coupling that eliminates the disconnect fuel spray.

It is also a purpose of the present invention to provide a quick disconnect coupling in which the release for the locking means is protected from incidental contact so as to prevent any unintentional unlocking of the coupling members.

SUMMARY OF THE INVENTION

A coupling for connecting conduits conveying fuel under pressure includes first and second coupling members having fluid flow passages for conveying fuel from a fuel tank to an internal combustion engine.

In accordance with one aspect of the invention, one of the coupling members is provided with a pair of spaced annual seals which cooperate with the bodies of the coupling members to define a chamber for containing fuel spray upon the disengagement of the coupling members.

In accordance with yet another aspect of the invention, one of the coupling members is provided with a shield that protects the lock release from incidental contact so that the coupling members cannot be accidentally or inadvertently disengaged during use.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings illustrate the best mode presently contemplated of carrying out the invention.

In the drawings:

FIG. 1 is a side view of a quick disconnect fuel line coupling with the two coupling members engaged;

FIG. 2 is a side cross sectional view of the quick disconnect assembly of FIG. 1;

FIG. 3 is an enlarged side cross sectional view showing the coupling members in a state of partial disengagement; and

FIG. 4 is a side cross sectional view showing the coupling members in complete disengagement.

DESCRIPTION OF THE PREFERRED EMBODIMENT

As shown in FIGS. 1 and 2, a quick disconnect coupling assembly 10 includes a first coupling member 12 and a second coupling member 14. First coupling member 12 has a body 16 from which extends a cylindrical projection 18. Projection 18 includes a flange or barb 20 which facilitates the connection of projection 18 to a hose (not shown) which conveys fuel to an internal combustion engine.

Second coupling member 14 includes a second coupling body 22 having a cylindrical projection 24 which also contains barbs or flanges 26 which facilitate the coupling of projection 24 to a hose (not shown) which conveys fuel from a storage tank.

First coupling member 12 is provided with a fluid flow passage 28 in which valve member 30 is disposed. Valve member 30 is biased by spring 32 to a position in which valve member 30 is in engagement with valve seat 34 as shown in FIG. 4. When valve member 30 is unseated from valve seat 34 as shown in FIG. 2, fluid is allowed to flow around legs 36 of valve member 39 and into the passageway 38 of cylindrical projection 18.

Similarly, second coupling member 14 is provided with a fluid flow passage 40 and a valve member in the form of ball 42 which is urged into engagement with valve seat 44 by the action of spring 46. Thus, when coupling members 12 and 14 are not joined, their respective valve members 30 and 42 are in engagement with their respective valve seats 34 and 44 and fluid flow passages 28 and 40 are closed.

As best seen in FIGS. 3 and 4, an integral annular gasket 48 is press fit within a cavity 49 in second coupling body 22 and provides first seal 44 and a second seal 50 located downstream of first seal 44. First seal 44 also serves as a valve seat for ball 42. A recessed portion 52 in annular gasket 48 between first seal 44 and second seal 50 defines a chamber 54.

Valve member 30 is provided with a projection 55 that extends outwardly from coupling body 16 and comes into engagement with ball 42 when coupling members 12 and 14 are joined. Since spring 46 is stronger than spring 32, ball 42 will not yield to projection 55, but rather projection 55 will be forced back against yielding spring 32 and valve member 30 will become disengaged from valve seat 34 opening passageway 28.

Valve body 16 is also provided with a projection 56 that extends coaxially with valve projection 54 and which defines a fluid flow passage 58. When coupling members 12 and 14 are in engagement as shown in FIG. 2, the end of projection 56 engages ball 42 and forces it off valve seat 44 and fluid flow passage 58 provides communication between fluid flow passage 40 and fluid flow passage 28 so as to allow the flow of fuel from gas tank to engine. Also, in this coupled state, seals 44 and 50 engage projection 56 and provide a double seal.

As shown in FIG. 2, first coupling body 16 is provided with a projection 60 that extends through a recess in second coupling body 22 and engages a releasable locking lever 62 disposed on coupling body 22. When disengagement of the coupling members is desired, locking lever 62 is pressed to permit disengagement of flange 64 from locking nipple 66. Coupling body 22 is provided with a pair of spaced extending flanges or shields 68 which provide a channel 69 in which locking lever 62 is disposed so as to prevent incidental contact with locking lever 62 and the inadvertent or accidental disengagement of the locking mechanism.

As shown in FIG. 3, when disengagement of coupling members 12 and 14 is initiated, valve ball 42 returns to its valve seat 44 and cuts off the flow of fuel from fluid flow passage 40. However, prior to ball 42 returning to seat 44, a slight amount of pressurized fuel inevitably escapes from fluid passage 40. In the prior art, this pressurized fuel would result in a fuel spray upon complete disengagement of the coupling members. However, in the present invention, the excess fuel is contained within chamber 58 and its escape is prevented due to the interaction of body projection 56 with second seal 50. The contained fuel must then flow into fluid flow passage 58.

Upon complete disengagement, as shown in FIG. 4, all excess fuel has flowed into fluid flow passage 58 and fuel spray is eliminated.

it is recognized that various alternatives and modifications are possible in the scope of the appended claims.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3174508 *Dec 7, 1962Mar 23, 1965Crawford Fitting CoDouble-end shut-off quick-connect tube coupling
US3800826 *Dec 26, 1972Apr 2, 1974Mc Cann S Eng & Mfg CoSoft drink dispenser disconnect assembly
US3873062 *Nov 30, 1973Mar 25, 1975Adams Donald LAir hose quick coupler
US4378028 *Apr 13, 1981Mar 29, 1983Swagelok CompanyQuick connect coupling
Non-Patent Citations
Reference
1 *Snap Tite catalog, 7/1968, Union City, Pa. 16438.
2Snap-Tite catalog, 7/1968, Union City, Pa. 16438.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5323811 *Feb 1, 1993Jun 28, 1994Rasmussen GmbhFluid coupling with automatic sealing valves
US5501397 *Dec 2, 1993Mar 26, 1996Hose Specialties/Capri, Inc.Recirculating paint system having a valved quick disconnect fluid coupling assembly
US5573046 *Aug 11, 1995Nov 12, 1996Ciba Corning Diagnostics Corp.Value housing for a fluid delivery system
US5586590 *Aug 11, 1995Dec 24, 1996Ciba Corning Diagnostics Corp.Coupler for fluid delivery system
US5586673 *Aug 11, 1995Dec 24, 1996Ciba Corning Diagnostics Corp.Cap assembly for fluid delivery system
US5732751Dec 4, 1995Mar 31, 1998Hewlett-Packard CompanyFilling ink supply containers
US5755269 *Dec 9, 1993May 26, 1998Ciba Corning Diagnostics Corp.Fluid delivery system
US5771053Dec 4, 1995Jun 23, 1998Hewlett-Packard CompanyAssembly for controlling ink release from a container
US5772116 *Jun 6, 1996Jun 30, 1998Holt; Earl R.Recirculating paint system having an improved spray gun
US5815182Dec 4, 1995Sep 29, 1998Hewlett-Packard CompanyFluid interconnect for ink-jet pen
US5823438 *Jul 19, 1995Oct 20, 1998Hose Specialties/Capri, Inc.Recirculating paint system having improved fluid coupling assemblies
US5847734Dec 4, 1995Dec 8, 1998Pawlowski, Jr.; Norman E.Air purge system for an ink-jet printer
US5857622 *Apr 9, 1997Jan 12, 1999Holt; Earl R.Recirculating paint system having an improved spray gun
US5900895Dec 4, 1995May 4, 1999Hewlett-Packard CompanyMethod for refilling an ink supply for an ink-jet printer
US6164558 *Jan 11, 1999Dec 26, 2000Holt; Earl R.Recirculating paint system having an improved push to connect fluid coupling assembly
US6179223Aug 16, 1999Jan 30, 2001Illinois Tool WorksSpray nozzle fluid regulator and restrictor combination
US6250287Mar 14, 2000Jun 26, 2001Brunswick CorporationFuel delivery system for a marine engine
US6572029Dec 22, 2000Jun 3, 2003Illinois Tool Works Inc.Recirculating paint system having an improved push to connect fluid coupling assembly
US6799747 *Nov 18, 2003Oct 5, 2004Plum Industrial Co., Ltd.Sealing structure for an oil pipe female coupler
US7537024Jul 29, 2003May 26, 2009Societe BicFuel cartridge with connecting valve
US7931053 *Nov 12, 2004Apr 26, 2011Smr Patents S.A.R.L.Sealing device for a tank access opening in particular for tank filler pipes on motor vehicles
US8152286 *Dec 27, 2007Apr 10, 2012Brother Kogyo Kabushiki KaishaInk supply device and inkjet image recording device
US8371271Oct 23, 2009Feb 12, 2013Federal-Mogul CorporationVapor vent control apparatus, system and outboard marine engine therewith
US8960310 *Jun 14, 2011Feb 24, 2015Cameron International CorporationApparatus and method for connecting fluid lines
US9284809 *Jan 9, 2015Mar 15, 2016Cameron International CorporationApparatus and method for connecting fluid lines
US20050022883 *Jul 29, 2003Feb 3, 2005Paul AdamsFuel cartridge with connecting valve
US20050028885 *Jun 22, 2004Feb 10, 2005Thomas ZappDischarge preventer for a line produced using the gas-assisted injection molding process
US20070215832 *Nov 12, 2004Sep 20, 2007Alfred Engelmann Holding GmbhSealing Device for a Tank Access Opening in Particular for Tank Filler Pipes on Motor Vehicles
US20080158315 *Dec 27, 2007Jul 3, 2008Brother Kogyo Kabushiki KaishaInk supply device and inkjet image recording device
US20100102257 *Oct 23, 2009Apr 29, 2010Achor Kyle DVapor vent control apparatus, system and outboard marine engine therewith
US20120318519 *Jun 14, 2011Dec 20, 2012Cameron International CorporationApparatus and method for connecting fluid lines
US20130192718 *Apr 20, 2011Aug 1, 2013Reckitt & Colman (Overseas) LimitedKit comprising a liquid container and a refill device
US20150129235 *Jan 9, 2015May 14, 2015Cameron International CorporationApparatus and Method for Connecting Fluid Lines
CN100561031CJul 26, 2004Nov 18, 2009法商Bic公司Fuel cartridge with connecting valve and connecting valve
WO2005013393A3 *Jul 26, 2004Jul 27, 2006Bic SocFuel cartridge with connecting valve
Classifications
U.S. Classification137/614.04, 251/149.6
International ClassificationF16L37/096, F16L37/32
Cooperative ClassificationF16L37/32, Y10T137/87957, F16L37/096
European ClassificationF16L37/32, F16L37/096
Legal Events
DateCodeEventDescription
Aug 27, 1993FPAYFee payment
Year of fee payment: 4
Aug 26, 1997FPAYFee payment
Year of fee payment: 8
Aug 29, 2001FPAYFee payment
Year of fee payment: 12
Jan 7, 2009ASAssignment
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